- Adirondacks Exhibition, juror of selection, 2007
- Alaska Watercolor Society, Juror and Judge, 2018
- American Watercolor Society Invited Juror, 2000
- American Watercolor Society Elected Juror, 2003
- American Watercolor Society Awards Judge, 2005
- American Watercolor Society Awards Judge, chairman 2011
- American Watercolor Society, Public Demo 2023
- Artist Magazine 22nd Annual Art Competition, Experimental Cat., Judge, 2005
- Arts North International 27th Exhibition, Hopkins Art Center, 2022
- California Watercolor Association, 50th Anniversary Exhibition, juror 2019
- California Watercolor Association, Juror and Judge, 2009
- Central Minnesota Art League Judge, 2002
- First International Watercolor Biennale Pakistan “Pearls of Peace” 2016
- Florida Watercolor Society Exhibition and Convention, 2011, juror and judge
- Fort Myers Beach Art Association, Juror and Judge, 2010
- Fourth International Watercolor Contest of the International Watercolor Society, 2014
- Georgia Watercolor Society Members’ Show, juror and judge, 2007, 2022
- Georgia Watercolor Society Exhibition, 2023
- Gibson County Visual Arts Exhibition, 2011
- International Masters of Watercolor Assn Biennale, juror, 2019
- International Masters of Watercolor Association IMWA, Second Universal Watercolor Exposition, juror and judge 2020, 2021, 2022
- IMWA, European Impressions International Exhibition 2021
- Iowa Watercolor Society Juror & Judge, 2006
- Indianapolis Art Club Exhibition, judge and juror, 2008
- International Watercolor Society, juror, 2014
- International Watercolor Society Canada, 2016
- International Watercolor Society Young Artists Watercolor Contest, 2014
- IWS Canada International Exhibition, Juror, 2016
- IWS South Africa, Judge, 2019
- Kansas Watercolor Society Great 8 Exhibition, 2004
- Kentucky Watercolor Society, judge and juror, 2013
- Louisiana Watercolor Society, Judge and Juror, 2006 and 2018
- Mid-Atlantic Watercolor Society, Judge and Juror, 2010
- Mid-Southern Watercolorists, Juror and Judge, 2009
- Midwest Watercolor Society, Juror and Judge, 2003
- Minnesota State Fair Juror and Judge, 2000, 2012
- Minnesota Watercolor Society Judge, 2002 and 2018
- Missouri Watercolor Society, Juror, 2009 and 2017
- Museum of Wisconsin Art, West Bend, Biannual, Juror and Judge, 2022
- Museo Nacional de la Acuarela Watercolor Society Annual Exhibition, Mexico City, 2021
- National Watercolor Society Juror, 2003
- National Watercolor Society 94th International Exhibition, Juror 2014
- National Watercolor Society 100th International Exhibition, Juror 2020
- New England Watercolor Society, Juror and Judge, 2010
- New Jersey Watercolor Society, Juror, 2015
- New Mexico Watercolor Society, Juror and judge, 2019
- Niagara Frontier Watercolor Society Exhibition, 2014
- North Carolina Watercolor Society, Juror and Judge, 2012
- Northern Plains Watercolor Society Judge, 2002
- Northern Arizona Watercolor Society Juror and Judge, 2013
- Northstar Watercolor Society, Judge, 2002
- Northwest Watercolor Society “Waterworks 2011”, juror and judge
- Ohio Watercolor Society, Juror and Judge, 2010
- Oklahoma Watercolor Society Exhibition, juror of selection and judge, 2008
- Oregon Watercolor Society National Exhibition, Judge and Juror, 2009
- Paramount Arts Trust Exhibition, Judge, 2010
- Pakistan Pearls of Peace International Watercolor Exhibition, Juror and Judge, 2016
- Pennsylvania Watercolor Exhibition, juror of selection, 2007
- Pennsylvania Watercolor Exhibition, juror, 2019
- Philadelphia Watercolor Society, 106th International Exhibition, 2006
- Philadelphia Watercolor Society, 120th International Exhibition Works on Paper 2020
- Pikes Peak Watercolor Society, 2011
- Pittsburgh Watercolor Society 75th Aqueous Open, Juror and Judge 2020
- Red River Watercolor Society Judge and Juror, 2003
- Richeson 75 International Landscape Exhibition 2007, judge
- Rhode Island Watercolor Society Members’ Show, 2004
- Rhode Island Watercolor National Exhibition, Judge and Juror, 2006
- Rocky Mountain Watermedia Exhibition, 2004
- San Diego Watercolor Society, Juror and Judge, 2009 and 2018
- Sangamon Watercolor Society, Judge, 2010
- Scholastic Artists and Writers Competition, Judge and Juror, 2002 and 2004
- Shenzhen Biennial, Juror and Judge, Shenzhen China, 2013
- Shenzhen International Watercolor Biennial, 2013-2014
- Signature American Watermedia Exhibition, 7th Annual, Fallbrook CA 2016
- South Carolina Watermedia Society, Juror and Judge, 2007
- Society of Acrylic Painters, Judge and Juror, 2010
- Southern Arizona Watercolor Guild, Juror and Judge, 2016
- Southern Watercolor Society, Juror and Judge, 2018
- St. Louis Watercolor Society 9th Annual Exhibition, juror of selection and judge, 2008
- Tennessee Watercolor Society Annual Exhibition, 2011, juror and judge
- Tennessee Watercolor Society Annual Exhibition, 2016, juror and judge
- Transparent Watercolor Society of America, juror and judge, 2018
- Universal Watercolor Exposition – 1st Annual, judge 2018
- Utah Watercolor Society, judge and juror, 2014
- Vermont Watercolor Society, judge and juror, 2014
- Virginia Watercolor Society, juror and judge, 2019
- Watercolor Art Society Houston Members’ Show, juror and judge, 2007
- Watercolor Art Society of Houston, 2011
- Watercolor Artist Annual Competition 2018, judge
- Watercolor Magic Annual Competition, Landscape Category, Judge, 2005
- Watercolor Society of Indiana Annual Juried Exhibition, Juror and Judge, 2016
- Watercolor Society of Oregon, Juror and Judge, 2009
- Watercolor Society of South Africa, Judge, 2021
- Watercolor West, judge and juror, Brea CA 2017
- Western Colorado Watercolor Society, Judge and Juror, 2005
- Western Federation Exhibition, Judge and Juror 2007
- Wisconsin Visual Artists Biennial Exhibition, 2021
- World of Watercolor 2016 Seventh Annual Signature American Watermedia Exhibition, juror and judge 2016
- Wyoming Watercolor Society, Juror and Judge, 2013